Microphone unit



FIG. 1 is a front, top perspective view of a microphone unit showing my new design;

FIG. 2 is a rear, bottom view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a front elevational view thereof; and,

FIG. 6 is a rear elevational view thereof. 

The ornamental design for a microphone unit, as shown and described. 